Explosive-gas engine.



Patented Aug. i, |899.

G, Hmr L G. Honra, EXPLSIVE GAS ENGINE.

' (Application led Oct. 24, 189B.)

(N0 Modul.)

..-l IH@ I WHW GEORG I-IIR'I AND GEORG HORN, OF NUREMBERG, GERMANY.

EXPLOSiVE-GAS ENGINE.

SPECIFICATION forming part of Letters Patent No. 630,083, dated August1, 1899.

Serial No. 694,412. (No model.)

To all whom it may concern:

Be it known that We, GEORG IIIRT, railway director, Trosstrasse 107 andGEORG HORN, mechanician, aussere Sulzbacherstrasse 15, subjects of theKing of Bavaria, residing at Nuremberg, in the Kingdom of Bavaria andGerman Empire, have invented certain new and useful Improvements in Two-Cycle Explosion-Engines; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

Most of the gas-motors hitherto in use are of the four-cycle type. To doaway with the many disadvantages dependent on this system and at thesame time to attain a greater working eect is the aim of the presentinvention,whieh involves a two-cycle motor and by which the work is sodistributed that an eective stroke occurs at every revolution.

In the accompanying drawings a gas-motor constructed according to theinvention is shown in Figures 1 and 2 in side elevation and horizontalsection, respectively, while Figs. 3 and 4 show the lever which Worksthe gasvalve in two positions.

In cylinder 1 moves a piston 2, which by means of the piston-rod 3stands in connection with the cross-head and by means of the piston-rod3a with the shaft et. The cylinder is closed at each end by the plates 5and 5fL and is in order to take up the cooling-water furnished with ahollow space or chamber 24. The piston is furnished with an interiorchamber 8, which by means of the perforations 9 and 9 is connected atthe proper moment with the canals 7 and 10. The firing takes place at 11by any of the known contrivances. The cylinder has the inlet and outletvalves 6 and 12, the pipe 24 for connecting with the cool- Waterconduit, and a suitable oil-cup 23 for holding a lubricator for thepiston. Valve 6 is self-acting and permits the entrance of the gasmixture. The rear end of the gas-cock 17 has an extension 1S, which isfor the reception of the levers 19 and 20, the former of which is fixedand has a movable-handle 21, While lever20 is fitted to be turned withthe extension and has a projection 20, which is connected with thegovernor. The exhaust-valve 12 has a spring 15 and is opened and closedby means of the angle-lever 15. For this purpose the pitman-rod 13,moved by the eccentric on the shaft 4, is connected with a sliding rod13b, which strikes against the anglelever 15, and thus raises the valve.

To start the engine, the handle 21 is brought into the position shown inFig. 4r. Its lengthened part then enters a slot in the lever 20, and theconnection with the governor and the gas-cock is produced. To stop theengine, the handle only requires to be brought into the positionindicated in Fig. 3. The lever 2O then plays freely in the axle 18, andthe cock 19 can be closed by a motion of the hand.

The operation of the machine is as follows: When the piston 2 moves outof the dead position from right to left, Fig. 2, through themixture-valve 6, fresh gas mixture is brought into the chamber beforethe piston and compressed at the back motion of the piston. By thiscompression the gas mixture is brought, by means of the canal? and theperforation 9, into the space 8. This operation is performed for thereason that it is not possible to conduct the sucked-in mixture, onaccount of the danger of premature firing, direct into the firing-spacebehind the piston. If the piston moves from the dead position a littleto the left, opening 9 is closed and the compressed mixture then remainsinclosed in 8 till the canal 10 and the perforation 9 are connected,when the mixture escapes and is at once fired on passing thefiring-point 11, so that it drives the piston forward in its Workingstroke. Meanwhile the outlet-valve 12 has been opened and remains sotill the piston has inished its stroke. The combustion products havethus an opportunity of exhausting down to atmospheric pressure. Theresidue is compressed on the back motion of the piston. In this way acertain counter-pres;

sure and high temperature prevail on the passage of the fresh mixtureinto the firingspace, so that a loss of tension in the fresh mixture isavoided. At every back stroke of the piston there is fresh gas mixtureand at the same time transfer of the compressed mixture in thepiston-space into the firing- IOO 15 the fresh mixture.

space and the likewise immediate firing of the same. At every forwardstroke of the piston the combustion products are exhausted and at thesame time the fresh mixture before the 5 piston is compressed, dac.

1o 10 on the other sideis intercepted, and therefore a certain quantityof combustion products remains at a higher pressure than the atmosphericpressure. Perforation 9a serves to remove the residue before thereception of As soon as this passes the valve l2, which is opened on theforward motion of the piston, the burn ed gases escape, and there onlyremains a small and innocuous remnant under atmospheric pressure.

Having thus described our invention, what we claim as new, and desire tosecureby Letters Patent, is-

In a gas-engine, a cylinder provided at one end with a receiving-chamberand at the other end with a working chamber, and an exhaustport midwaybetween the ends of the cylinder and controlled by anautomatically-operated valve, in combination with a piston having formedtherein a chamber, ports communieating said piston-chamber with thereceiver 3o and working chambers and with an exhaustport of the cylinderat predetermined periods of the stroke, substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

GEORG HIRT. 'GEORG HORN. Witnesses:

ALEX WIELE, MAX SCHNEIDER.

